メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.455036848908 43.4880341220864, 144.455427709559 43.4882430357338, 144.45565431068 43.4883440426978, 144.456120952382 43.4884802866578, 144.45685843133 43.4885372481385, 144.457279135795 43.4885048598581, 144.457469309029 43.4889469698946, 144.456395040788 43.4892268272848, 144.454654344579 43.4896560369066, 144.454071573608 43.4898745951639, 144.453639770716 43.4900322225828, 144.453560684255 43.4897754119499, 144.453539871523 43.4892037634531, 144.453546419489 43.4891660839231, 144.453576717896 43.4889954563527, 144.453764945699 43.4885996993116, 144.453965927456 43.4882890335258, 144.454321841409 43.4878513624753, 144.454366219134 43.4877969196389, 144.454443015681 43.4876991294249, 144.455036848908 43.4880341220864)) ^^http://www.opengis.net/ont/geosparql#wktLiteral